#64C8CB
Closest named color: Medium Turquoise (#48D1CC). oklch(77.4% 0.094 198), rgb(100, 200, 203).
Aa
Black text reads best on this color (10.66:1).
About this color
#64C8CB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 77%, its chroma 0.094 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Turquoise (#48D1CC), ΔE 0.028 away. Black text reads best on it, at 10.66:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Medium Turquoise (#48D1CC) |
| Black text | 10.66:1 |
| White text | 1.96:1 |
Values
| HEX | #64C8CB |
| RGB | rgb(100, 200, 203) |
| HSL | hsl(182, 50%, 59%) |
| OKLCH | oklch(77.4% 0.094 198) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #64C8CB | 1.96:1 | Fails | Lc -42.1 | Non-text elements, placeholder text |
| Black text on #64C8CB | 10.66:1 | AAA | Lc 66.1 | Content text, not long reading |
| #64C8CB text on white | 1.96:1 | Fails | Lc 37.8 | Non-text elements, placeholder text |
| #64C8CB text on black | 10.66:1 | AAA | Lc -64.6 | Content text, not long reading |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 300.
-
Step 50
50
#ECF8F8
oklch(97% 0.013 196.9)
-
Step 100
100
#D6F0F0
oklch(93.6% 0.027 196.7)
-
Step 200
200
#B2E4E5
oklch(88.5% 0.051 197.8)
-
Step 300
300 (this color)
#64C8CB
oklch(77.4% 0.094 198)
-
Step 400
400
#00B7BC
oklch(70.8% 0.12 198.3)
-
Step 500
500
#009DA1
oklch(63.2% 0.107 198)
-
Step 600
600
#008487
oklch(55.6% 0.095 197.6)
-
Step 700
700
#006F72
oklch(49.2% 0.084 198.1)
-
Step 800
800
#005B5D
oklch(42.7% 0.073 197.4)
-
Step 900
900
#004C4E
oklch(37.8% 0.064 197.8)
-
Step 950
950
#002D2E
oklch(27% 0.046 197.1)
#64C8CB with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #BCC0CB | 0.096 |
| Deuteranopia (no green cones) | #ABB3CC | 0.091 |
| Tritanopia (no blue cones) | #18CEC9 | 0.038 |
| Achromatopsia (no color) | #B9B9B9 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64C8CB
#64C8CB
oklch(77.4% 0.094 198)
- #EB9D9F
#EB9D9F
oklch(77.3% 0.094 17.8)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #64C8CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Turquoise #48D1CC ΔE 0.028
- Dark Turquoise #00CED1 ΔE 0.038
- Pale Teal #82CBB2 ΔE 0.045
- Seafoam Blue #78D1B6 ΔE 0.048
- Vivid Sky Blue #4CC9F0 ΔE 0.054
- Medium Aquamarine #66CDAA ΔE 0.054
- Aqua Blue #02D8E9 ΔE 0.055
- Sky Blue #87CEEB ΔE 0.060
Use #64C8CB in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.